MATLAB嵌入式零树编码算法实现+文献综述
关键词 小波变换 零树编码 图像压缩 算法实现
毕业设计说明书（论文）外文摘要
Title Embedded Zerotree Coding Algorithm
On the basis of image compression research ,this dissertation
systematically introduces the image compression basic principle based on
wavelet transform ,and explores the implementation method to realize the
Embedded Zerotree Wavelets Encoding the way to write programs using MATLAB
as design software ,and them carries out its coding performance tests.
At first, the basic principle of digital image compression is
introduced, along with the image coding method. And then after raising the
technology of wavelet coding , the basic theory of wavelet analysis is
introduced ,then this thesis exports the fast algorithm of wavelet
transforms-Mallat algorithm. On the basis of wavelet transform ,this paper
studies the characteristics of wavelet image, and focuses on illustrating
embedded coding and zerotree data structure .Considering the
characteristics of wavelet image, embedded zerotree coding algorithm is
put forward, and the steps was analyzed. Finally , simulation experiment
is done according to the different standard test pictures ,to analyze the
advantages and disadvantages of this algorithm.
Keywords Wavelet transform Zerotree coding Image compression Algorithm
目 次
1. 绪论. 1
1.1 论文研究的背景及意义 1
1.2 本文的主要工作 1
1.3 本文的组织结构 1
2. 图像压缩技术简介. 2
2.1 图像压缩的必要性和可行性. 2
2.2 图像信息冗余量 3
2.3 图像压缩编码方法. 4
3. 小波分析理论 6
3.1 小波分析理论提出.. 7
3.2 小波变换的定义 7
3.3 多分辨率分析和Mallat算法 8
4. 小波变换编码. 13
4.1 嵌入式编码 15
4.2 零树的提出 16
5. 嵌入式零树小波编码算法实现（EZW） .. 17
5.1 算法步骤. 18
5.2 算法分析. 19
6. 实验结果与分析 24
6.1 实验环境和实验方案.. 24
6.2 实验结果与分析. 24
结论 30
致谢 31
参 考 文 献. 32
1 绪论
1.1 论文研究的背景及意义[13][14]
随着现代信息技术的飞速发展，需要存储和传输的信息量越来越多，数据的种类